G01P 21/02
Testing or calibrating of apparatus or devices covered by the preceding groups
Official title: of speedometers
G01P21/02 (Testing or calibrating of apparatus or devices covered by the preceding groups) appears on 638 US grants and 512 published applications in this corpus.
Search patents in G01P- Granted patents
- 638
- Published applications
- 512
- Assignees
- 365
- Inventors
- 1,393
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 8 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 6 | 0 |
| 1995 | 15 | 0 |
| 1996 | 18 | 0 |
| 1997 | 12 | 0 |
| 1998 | 17 | 0 |
| 1999 | 13 | 0 |
| 2000 | 18 | 0 |
| 2001 | 20 | 10 |
| 2002 | 12 | 10 |
| 2003 | 10 | 14 |
| 2004 | 15 | 7 |
| 2005 | 11 | 12 |
| 2006 | 11 | 7 |
| 2007 | 4 | 4 |
| 2008 | 6 | 7 |
| 2009 | 6 | 14 |
| 2010 | 7 | 18 |
| 2011 | 6 | 16 |
| 2012 | 15 | 17 |
| 2013 | 14 | 17 |
| 2014 | 14 | 17 |
| 2015 | 24 | 31 |
| 2016 | 15 | 27 |
| 2017 | 21 | 30 |
| 2018 | 23 | 28 |
| 2019 | 38 | 34 |
| 2020 | 33 | 37 |
| 2021 | 28 | 33 |
| 2022 | 23 | 27 |
| 2023 | 33 | 35 |
| 2024 | 26 | 20 |
| 2025 | 26 | 23 |
| 2026 | 13 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- AOM frequency shifter test fixture6 Oct 2026US 12,754,206 B2Rosemount Aerospace Inc.
- Wheel speed transducer test adapter8 Sep 2026US 12,730,125 B2The Boeing Company
- Inspection method of inspecting moving object8 Sep 2026US 12,730,126 B2Toyota Jidosha Kabushiki Kaisha
- Techniques for assuring accuracy of air-data systems18 Aug 2026US 12,710,443 B2Honeywell Aerospace US LLC
- Aircraft sensor simulation calibration systems and methods16 Jun 2026US 12,656,366 B2General Electric Company
- Window covering system to an optical head of an optical air data system13 Aug 2026US 2026/0235638 A1Honeywell International Inc.
- Independent Redundant Wheel Speed Processing System and Method9 Jul 2026US 2026/0192787 A1Wuhu Bethel Electronic Control System Co., Ltd.
- Method for determining a magnetization direction of a wiegand wire, and wiegand sensor arrangement2 Jul 2026US 2026/0186084 A1Fraba B.V.
- System25 Jun 2026US 2026/0177458 A1Toyota Jidosha Kabushiki Kaisha
- Aircraft Altitude System11 Jun 2026US 2026/0160550 A1Skyryse, Inc.
Most cited
By later US patents
- Zero motion detection system for improved vehicle navigation system133US 5,991,692 AMagellan DIS, Inc. · 1999
- Programmable multifunction speedometer127US 5,636,145 AThomas J. Faria Corp. · 1997
- Vehicle speed signal calibration91US 5,828,585 ADelco Electronics Corporation · 1998
- Adaptation method for correcting tolerances of a transducer wheel86US 5,789,658 ASiemens Aktiengesellschaft · 1998
- Detected signal processing device for rotating sensor and detected signal outputting method therefor71US 6,492,804 B2Denso Corporation · 2002